9094648

Tone Mapping For Low-Light Video Frame Enhancement

PublishedJuly 28, 2015
Assigneenot available in USPTO data we have
Technical Abstract

Patent Claims
20 claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

1. An image acquisition and processing device, comprising: an image acquisition unit configured to: acquire a plurality of sharp images of a scene; and acquire a blurred image nominally of the same scene; an image combining unit configured to: generate a first combined image based, at least in part, on a first sharp image, from the plurality of sharp images, and color information of the blurred image; and generate a second combined image based, at least in part, on a second sharp image, from the plurality of sharp images, and the first combined image; wherein the first sharp image is different than the second sharp image; and an image display unit configured to: display the second combined image.

2

2. The image acquisition and processing device of claim 1 , wherein the first combined image is generated using also luminance information of the blurred image; wherein the first combined image and a second combined image are color-enhanced and a luminance-enhanced versions of the first sharp image; and wherein the second combined image appears less blurred than the blurred image.

3

3. The image acquisition and processing device of claim 1 , wherein pixels of the blurred image exhibit a greater motion blurring effect than pixels of the sharp image.

4

4. The image acquisition and processing device of claim 1 , wherein the blurred image is acquired by digitally exposing pixels of a sensor array for an exposure time that is longer than respective exposure times during which each image of the plurality of sharp images is acquired.

5

5. The image acquisition and processing device of claim 1 , wherein the blurred image nominally of the same scene is overexposed.

6

6. The image acquisition and processing device of claim 1 , wherein each image of the plurality of sharp images is represented in an RGB format; and wherein the blurred image is represented in the RGB format.

7

7. The image acquisition and processing device of claim 1 , wherein each image of the plurality of sharp images is represented in an YCC format; and wherein the blurred image is represented in the YCC format.

8

8. An image processing method comprising: acquiring a plurality of sharp images of a scene; acquiring a blurred image nominally of the same scene; generating a first combined image based, at least in part, on a first sharp image, from the plurality of sharp images, and color information of the blurred image; generating a second combined image based, at least in part, on a second sharp image, from the plurality of sharp images, and the first combined image; wherein the first sharp image is different than the second sharp image; and displaying the second combined image; wherein the method is performed using one or more computing devices.

9

9. The image processing method of claim 8 , wherein the first combined image is generated using also luminance information of the blurred image; wherein the first combined image and a second combined image are color-enhanced and a luminance-enhanced versions of the first sharp image; and wherein the second combined image appears less blurred than the blurred image.

10

10. The image processing method of claim 8 , wherein pixels of the blurred image exhibit a greater motion blurring effect than pixels of the sharp image.

11

11. The image processing method of claim 8 , wherein the blurred image is acquired by digitally exposing pixels of a sensor array for an exposure time that is longer than respective exposure times during which each image of the plurality of sharp images is acquired.

12

12. The image processing method of claim 8 , wherein the blurred image nominally of the same scene is overexposed.

13

13. The image processing method of claim 8 , wherein each image of the plurality of sharp images is represented in an RGB format; and wherein the blurred image is represented in the RGB format.

14

14. The image processing method of claim 8 , wherein each image of the plurality of sharp images is represented in an YCC format; and wherein the blurred image is represented in the YCC format.

15

15. A non-transitory computer-readable storage medium storing one or more instructions which, when performed by one or more processors, cause the processors to perform: acquiring a plurality of sharp images of a scene; acquiring a blurred image nominally of the same scene; generating a first combined image based, at least in part, on a first sharp image, from the plurality of sharp images, and color information of the blurred image; generating a second combined image based, at least in part, on a second sharp image, from the plurality of sharp images, and the first combined image; wherein the first sharp image is different than the second sharp image; and displaying the second combined image.

16

16. The non-transitory computer-readable storage medium of claim 15 , wherein the first combined image is generated using also luminance information of the blurred image; wherein the first combined image and a second combined image are color-enhanced and a luminance-enhanced versions of the first sharp image; and wherein the second combined image appears less blurred than the blurred image.

17

17. The non-transitory computer-readable storage medium of claim 15 , wherein pixels of the blurred image exhibit a greater motion blurring effect than pixels of the sharp image.

18

18. The non-transitory computer-readable storage medium of claim 15 , wherein the blurred image is acquired by digitally exposing pixels of a sensor array for an exposure time that is longer than respective exposure times during which each image of the plurality of sharp images is acquired.

19

19. The non-transitory computer-readable storage medium of claim 15 , wherein the blurred image nominally of the same scene is overexposed.

20

20. The non-transitory computer-readable storage medium of claim 15 , wherein each image of the plurality of sharp images is represented in an YCC format; and wherein the blurred image is represented in the YCC format.

Patent Metadata

Filing Date

Unknown

Publication Date

July 28, 2015

Inventors

Ruxandra Vranceanu

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Cite as: Patentable. “Tone Mapping For Low-Light Video Frame Enhancement” (9094648). https://patentable.app/patents/9094648

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